Bad Morning, i started driving to work and my car strats to stutter. it only does it when u accelerate a lil bit faster, driving slow it don't do it, but once u step on the gas pedal it starts stuttering

Does that gotta do anything with the O2 sensor, cause the check engine is on for that and the catalyic converter )below trash hold)

the only mod i did to the car is put a carboin intake like 4 months ago, aluminum lightweight flywheel and clutch.

please let me know thank u

 

is that the only code your throwing? how long has it been since you had that cel and the stuttering problem? go to autozone and have your codes read again...i would start by fixing that o2 sensor..hard topinpoint without codes or logs..